Stacking bowls / box.
Maybe this isn’t an original model. It is a simple idea, with only a few very obvious folds. The key to the shape is making each crease short enough to allow the bowl to curve. If you creased all the way across you would break the paper and lose the lines.
Tell me if you’ve seen it somewhere else - or discovered it yourself - and I’ll edit the post to give credit where it’s due.
An Interlocking box (from 2 stacking bowls).
If you make a second bowl that is a mirror image of the first, the two will twist together to form a box, as shown in the photo.
Folded from 15cm Kami (by Clairefontaine)
Designed April 2016